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The impact of supercritical CO2 conditions on extracting antioxidant compounds from tangerine leaves (Citrus reticulata) for enhancing oxidative stability in soybean oil

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Autor(es):
Rodriguez-Garcia, Camilo ; Strieder, Monique Martins ; Dominguez-Rodriguez, Gloria ; Caballero, Michael Ernesto Moreno ; Palomeque, Liliam ; Cifuentes, Alejandro ; Parada-Alfonso, Fabian ; Ibanez, Elena
Número total de Autores: 8
Tipo de documento: Artigo Científico
Fonte: INNOVATIVE FOOD SCIENCE & EMERGING TECHNOLOGIES; v. 109, p. 10-pg., 2026-05-01.
Resumo

Tangerine leaves were valorized as a source of natural antioxidants for protecting soybean oil against lipid oxidation. Initial Soxhlet extracts obtained using hexane (Hex-S), ethyl acetate (EtOAc-S), and ethanol (EtOH-S) showed that the Hex-S extract provided the highest oxidative stability, highlighting the relevance of nonpolar compounds in delaying lipid oxidation. To develop a more sustainable alternative to hexane extraction, supercritical CO2 (SC-CO2) extraction was optimized using a central composite design, assessing the effects of pressure (100, 200, and 300 bar) and temperature (40, 50, and 60 degrees C) on the extract's antioxidant performance. The optimal SC-CO2 extract, obtained at 273 bar and 37 degrees C, extended the induction period of soybean oil oxidation to 5.2 h, outperforming both the Hex-S extract (4.4 h) and the control sample (3.8 h), and resulted in a lower panisidine value (13.36). These activities may be attributed to extracted bioactive compounds, such as linalool, thymol, and tangeretin. (AU)

Processo FAPESP: 21/12264-9 - Avaliação técnico-econômica do acoplamento de tecnologias emergentes e de solventes verdes ao sistema bidimensional de extração, separação e análise para obtenção de composto fenólicos de resíduos da indústria de café e de bebidas vegetais
Beneficiário:Monique Martins Strieder
Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
Processo FAPESP: 23/05722-6 - Biorrefinaria dos processos de leite vegetal de amêndoa e amendoim: estudo de tecnologias e solventes alternativos para obter compostos bioativos a partir de seus resíduos sólidos
Beneficiário:Monique Martins Strieder
Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado